$OpenBSD: patch-src_model_cpp,v 1.1 2017/04/30 08:25:28 espie Exp $
--- src/model.cpp.orig
+++ src/model.cpp
@@ -49,6 +49,7 @@ using namespace std;
 texture::mapping_mode model::mapping = texture::LINEAR_MIPMAP_LINEAR;//texture::NEAREST;
 
 unsigned model::init_count = 0;
+const unsigned model::mesh::no_adjacency;
 
 /*
 fixme: possible cleanup/simplification of rendering EVERYWHERE:
